[all-commits] [llvm/llvm-project] 9eb493: [ORC] Allow JITDylib::getDFSLinkOrder and friends ...

[lhames via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9eb4939b862a2c0ab6690c3e8526366594722010
      https://github.com/llvm/llvm-project/commit/9eb4939b862a2c0ab6690c3e8526366594722010
  Author: Lang Hames <lhames at gmail.com>
  Date:   2022-01-20 (Thu, 20 Jan 2022)

  Changed paths:
    M llvm/include/llvm/ExecutionEngine/Orc/Core.h
    M llvm/lib/ExecutionEngine/Orc/Core.cpp
    M llvm/lib/ExecutionEngine/Orc/ELFNixPlatform.cpp
    M llvm/lib/ExecutionEngine/Orc/LLJIT.cpp
    M llvm/lib/ExecutionEngine/Orc/MachOPlatform.cpp
    M llvm/unittests/ExecutionEngine/Orc/CoreAPIsTest.cpp

  Log Message:
  -----------
  [ORC] Allow JITDylib::getDFSLinkOrder and friends to fail for defunct JITDylibs.

Calls to JITDylib's getDFSLinkOrder and getReverseDFSLinkOrder methods (both
static an non-static versions) are now valid to make on defunct JITDylibs, but
will return an error if any JITDylib in the link order is defunct.

This means that platforms can safely lookup link orders by name in response to
jit-dlopen calls from the ORC runtime, even if the call names a defunct
JITDylib -- the call will just fail with an error.